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Puzzles Questions with Answers

Puzzles
 
1. What is the value of the following expression?
Ans: 9.
Sol.
81/9 = 9.
 
2. Which illustration doesn't belong with the others?
Ans: Octagon : 8 sides - should have 7 lines - but F has only 6 lines.
Sol.
Each image has one fewer number of lines than the number of sides it has.
Triangles : 3 sides - 2 lines
Square : 4 sides - 3 lines
Pentagon : 5 sides - 4 lines
Hexagon : 6 sides - 5 lines
Octagon : 8 sides - should have 7 lines - but F has only 6 lines.
 
 
3. What is the missing number in the pie below?
Sol.
The missing number is 6. The two numbers opposite each other always total 21.
15 + 6 = 21
The other numbers: 17 + 4 = 21
13 + 8 = 21
11 + 10 = 21.